Lubricator



UNITED STATES PATENT OFFICE.

OLIVER HOFFMAN AND IAMES OURRAN, OF WILMINGTON, DELAYARE.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 599,839, dated March 1, 1898.

Application led December 8,1896. Serial No. 614,896. (No model.)

Tc all whom, it may concer-7e:

Se it known that we, OL-Ivnn HOFFMAN and .latins CURRAN, citizens or the United States, residing at Vilmington, in the county of New Castle and State of Delaware, have invented a certain new and useful Improvement in Devices for Attaching OilOups to Vehicle-Hubs, of which the following is a specification.

Our invention relates to a new and useful improvement in devices for attaching oil-cups to vehicle-hubs,- and has for its object to provide a simple, cheap, and efficient article by which an oiler is secured in place.

With these ends in view the invention cousists in the details of construction, combination, and arrangement of elem ents to be hereinafter more fully set forth, and specifically designated in the claim.

In order that those skilled in the art to which this invention I appertains may understand how to make and use the same,reference is had to the accompanying drawings, forinng part of this specication, wherein like characters oil reference denote corresponding the cap being vomitted and showing the wrench-ring surrounding the same, by means of which it is to run into or out of the hub. Fig. 5 is a plan view of the wrench-ring. Fig.

G is asectional view at the line :nef Fig. 2.

ln the drawings, A represents a cup of 'suitable shape and size and with which is formed a shank IB, having external threads thereon and a passage therethrough. This shank is adapted to be threaded into the hub C of a vehicle, its end extending through the box D to the spindle E, to which the lubricant is adapted to flow through the passage.

y A cap F is arranged to run upon the upper threaded end of the cup and prevented from backing thercoil by tho spring-latch G, the

i nose of which is adapted to engage with the lug H, as clearly shown in Fig. 3.

The cap F is provid ed with a dome LthroughA which the spindle J, having a reduced lower end S, passes, said spindle being threaded throughout the greater portion of its length, as indicated at K, by a left-hand thread,ajbove which is secured a collar L, said Ycollar itting snugly within the dome and having interposed therebetween and the top of the doine the spring M. A thumb-lever N is secured to the upper end of the spindle, by means of which the latter may be revolved in either direction,'for the purpose presently set forth.

A plunger O is tted within the cup and held against rotation, while it is permitted to slide up and dwn therein, by the lugs F, which fit in corresponding grooves in the sides of the cup, after the mannerof a spline, and

through'this plunger is threaded the spindleA `K, so that when the spindle is rotated in either direction the plunger will be raised or lowered,as the case may be, and the pressure lessened or increased on the lubricant, which is indicated by the broken lines at R. The plunger is caused'to fit the interior of the cup snugly by the packing-ring Q, made of any suitable materialand itted in a groove in the periphery of the plunger. In order that Ithe shank be comparatively easily screwed in place, we provide the wrench-ring X, here shown as hexagonal in shape and having an opening therethrough of suflioient size to pass over the cup; and a cut-out portion Y is formedin its inner rim 'for embracing an eulargement T, provided at the side of the cup.

Vhile the threaded shank is usually suiiicient to hold the cup in place upon the hub, it is sometimes desirable to further secure said cup, and this we accomplish by forming a dovetail groove T in the enlargement T and tting therein a dovetail clip U and securing the clip to one of the spokes by a yoke V, as shown in Fig. l, for runninga screwW through 4the clip into the hub, as shown in Fig. 2.

From the foregoing description it will be seen that the cup is applied by placing the ring X on the cup, the enlargementT fitting in the cut-out portion T, and Withithe use -ofa wrench on the ring the cup maybe'easily and quickly secured in its proper place. The ring is then removed and the clip U slipped into the dovetail groove and secured ineither of the Ways above described, when the cup will be held stationary-until the clip has been removed. y

Having thus fully described our invention, What We claimas new and useful is- In an oiler, a cup, provided with a threaded shank, said shank having a passage therethrough, an enlargement formed on the side of the cup, a ring having a notch formed in v its inner rim, said ring beingadapted to it over the cup, flat surfaces formed on tne ring. which awrench may engage, substantially as I 5 described.

In testimony whereof We have hereunto affixed our signatures in' the presence of two subscribing witnesses.

OLIVER HOFFMAN.

his JAMES CURRAN. 

